She is the only child of Mohammad Reza Pahlavi and his first wife Princess Fawzia Fuad. Shahnaz is the half-sister of Crown Prince Reza Pahlavi, Princess Farahnaz Pahlavi, Prince Ali Reza Pahlavi II and Princess Leila Pahlavi – the four children of the Shah by his third wife, Shahbanou Farah Pahlavi.